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JPS5478638A - Input/output control circuit - Google Patents

Input/output control circuit

Info

Publication number
JPS5478638A
JPS5478638A JP14572577A JP14572577A JPS5478638A JP S5478638 A JPS5478638 A JP S5478638A JP 14572577 A JP14572577 A JP 14572577A JP 14572577 A JP14572577 A JP 14572577A JP S5478638 A JPS5478638 A JP S5478638A
Authority
JP
Japan
Prior art keywords
circuit
control circuit
command
input
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14572577A
Other languages
Japanese (ja)
Inventor
Hideo Asano
Tsuneki Mori
Isamu Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14572577A priority Critical patent/JPS5478638A/en
Publication of JPS5478638A publication Critical patent/JPS5478638A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable the control for the input/output devices featuring different meanings of the command bit, by providing inside the input/output control circuit formed by turning the basic control circuit into LSI and then carrying out the control by the command the user can set freely via the control circuit added to tho outside of the control circuit.
CONSTITUTION: The data process system consists of CPU10, LSI-formed input/ output control circuit 11 and input/output device 12 controlled by circuit 11. In such process system, register 16 to hold the command to be transmitted to device 12 from CPU10 plus register 14 to hold temporarily the data to be transferred are provided to circuit 11. Furthermore, control circuit 15 is added to control the data transfer between register 14 and device 12. Thus, a control is given within circuit 11 to command CA for the interruption permission or non-permission among the commands given to circuit 11 from CPU10 as well as to command CB to designate the data transfer direction to device 12. Other command CC is delivered to outside, and device 12 is controlled by external circuit 13.
COPYRIGHT: (C)1979,JPO&Japio
JP14572577A 1977-12-06 1977-12-06 Input/output control circuit Pending JPS5478638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14572577A JPS5478638A (en) 1977-12-06 1977-12-06 Input/output control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14572577A JPS5478638A (en) 1977-12-06 1977-12-06 Input/output control circuit

Publications (1)

Publication Number Publication Date
JPS5478638A true JPS5478638A (en) 1979-06-22

Family

ID=15391680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14572577A Pending JPS5478638A (en) 1977-12-06 1977-12-06 Input/output control circuit

Country Status (1)

Country Link
JP (1) JPS5478638A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57105065A (en) * 1980-12-23 1982-06-30 Fujitsu Ltd Common control system of magnetic tape and magnetic disk
JPS59123032A (en) * 1982-12-29 1984-07-16 Fujitsu Ltd input/output control system
JPS61234433A (en) * 1985-04-10 1986-10-18 Sony Corp Software load device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57105065A (en) * 1980-12-23 1982-06-30 Fujitsu Ltd Common control system of magnetic tape and magnetic disk
JPH0135377B2 (en) * 1980-12-23 1989-07-25 Fujitsu Ltd
JPS59123032A (en) * 1982-12-29 1984-07-16 Fujitsu Ltd input/output control system
JPS61234433A (en) * 1985-04-10 1986-10-18 Sony Corp Software load device

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